// Copyright 2022 PingCAP, Ltd.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.


#include <DataStreams/HashJoinBuildBlockInputStream.h>
namespace DB
{
Block HashJoinBuildBlockInputStream::readImpl()
{
    Block block = children.back()->read();
    if (!block)
        return block;
    join->insertFromBlock(block, concurrency_build_index);
    return block;
}

} // namespace DB
